Stability Analysis of High Speed Railway Vehicles

Zeng, Jing; Wu, Pingbo

doi:10.1299/jsmec.47.464

Cited by 51 publications

(33 citation statements)

References 12 publications

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“…Many those questions have already been answered thanks to the works of numerous researchers, e.g. [12,13,21,22,[24][25][26][30][31][32]34,35,38,[40][41][42]65,66]. There is also the new question that focuses the authors attention presently.…”

Section: Introductionmentioning

confidence: 99%

Bifurcation analysis of 4-axle rail vehicle models in a curved track

Zboiński

Dusza

2017

Nonlinear Dyn

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The article presents authors' recent results on nonlinear lateral stability of rail vehicles in a curved track. The theories of self-exciting vibrations and bifurcation are the key elements here. The general objective is presentation of extended use of the earlier worked out authors' method to more complex rail vehicle models. Two 4-axle vehicle models were created. The first one represents coach MKIII described with multibody software by the first author. The second one represents coach 127A described with use of engineering multibody software VI-Rail. The models are described, and method of the analysis is shortly reminded. Then, results for both models are presented. They include verification of the limit cycle possible passage from straight track to circular curve and stability maps for regular curves of different radii and straight track. Next influence of selected suspension parameter and wheelrail coefficient of friction on vehicle stability is shown. The more general objective is the authors' say in the hot polemics on the advisability of rail vehicle stability analysis in curves and on the advantages of the nonlinear methods of such analysis over the linear ones.

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Section: Introductionmentioning

confidence: 99%

Bifurcation analysis of 4-axle rail vehicle models in a curved track

Zboiński

Dusza

2017

Nonlinear Dyn

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“…The studies involve the influence of suspension parameters, rail radius and inclination, and wheel-rail profile and mean rolling radius on the hunting stability. Zeng and Wu [27] study the critical speed at the Hopf bifurcation point on a circular curved track. The influences of track curve radius and super elevation on nonlinear critical speed are investigated.…”

Section: Introductionmentioning

confidence: 99%

The effect of wheel set gyroscopic action on the hunting stability of high-speed trains

Zeng

Jiang

et al. 2017

Vehicle System Dynamics

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(2017) The effect of wheel set gyroscopic action on the hunting stability of high-speed trains, Vehicle System Dynamics, 55:6, 924-944, DOI: 10.108055:6, 924-944, DOI: 10. /00423114.2017 ABSTRACTThis study explores the effects of wheel set gyroscopic action on hunting stability by calculating linear and nonlinear critical speeds. First, a dynamic model for a high-speed vehicle with 23 degrees of freedom is developed by considering wheel set gyroscopic action. The linear and nonlinear critical speeds are calculated by eigenvalue analysis and drawing a bifurcation map, respectively. Two computer programs for linear and nonlinear stability analysis are developed. Second, based on an actual high-speed vehicle in China, the effects of wheel set gyroscopic action on hunting stability are quantitatively investigated using computer simulation. Furthermore, the difference between the effects of gyroscopic moments about the x-axis and zaxis is discussed. The results show that the moment about the x-axis is harmful to hunting stability, but the moment about the z-axis is beneficial to hunting stability. However, the integrated effect of these two moments can enhance the critical speeds and suppress the hunting motion. ARTICLE HISTORY

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“…Zboinski and Dusza [27][28][29][30] obtained the bifurcation diagrams, and conducted a lot of studies on the nonlinear stability of railway vehicle running on a curved track. Zeng and Wu [31] studied the critical speed at the hopf bifurcation point on circular curved track. The influences of track curve radius and super elevation on nonlinear critical speed were investigated.…”

Section: Introductionmentioning

confidence: 99%

Influences of aerodynamic loads on hunting stability of high-speed railway vehicles and parameter studies

Zeng

Jiang

et al. 2014

Acta Mech Sin

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The influences of steady aerodynamic loads on hunting stability of high-speed railway vehicles were investigated in this study. A mechanism is suggested to explain the change of hunting behavior due to actions of aerodynamic loads: the aerodynamic loads can change the position of vehicle system (consequently the contact relations), the wheel/rail normal contact forces, the gravitational restoring forces/moments and the creep forces/moments. A mathematical model for hunting stability incorporating such influences was developed. A computer program capable of incorporating the effects of aerodynamic loads based on the model was written, and the critical speeds were calculated using this program. The dependences of linear and nonlinear critical speeds on suspension parameters considering aerodynamic loads were analyzed by using the orthogonal test method, the results were also compared with the situations without aerodynamic loads. It is shown that the most dominant factors affecting linear and nonlinear critical speeds are different whether the aerodynamic loads considered or not. The damping of yaw damper is the most dominant influencing factor for linear critical speeds, while the damping of lateral damper is most dominant for nonlinear ones. When the influences of aerodynamic loads are considered, the linear critical speeds decrease with the rise of cross wind velocity, whereas it is not the case for the nonlinear critical speeds. The variation trends of critical speeds with suspension parameters can be significantly changed by aerodynamic loads. Combined actions of aerodynamic loads and suspension parameters also affect the critical speeds. The effects of such joint action are more obvious for nonlinear critical speeds.

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Stability Analysis of High Speed Railway Vehicles

Cited by 51 publications

References 12 publications

Bifurcation analysis of 4-axle rail vehicle models in a curved track

Bifurcation analysis of 4-axle rail vehicle models in a curved track

The effect of wheel set gyroscopic action on the hunting stability of high-speed trains

Influences of aerodynamic loads on hunting stability of high-speed railway vehicles and parameter studies

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